Title :
Optical fiber tweezers fabricated by two photon lithography
Author :
Liberale, C. ; Fabrizio, E. Di ; Cojoc, G. ; Perozziello, G. ; Candeloro, P. ; Bragheri, F. ; Ferrara, L. ; Minzioni, P. ; Cristiani, I.
Author_Institution :
Italian Inst. of Technol. (IIT), Genova, Italy
Abstract :
In this work we report on a new approach for such optical fiber tweezers in which microprisms acting as beam deflectors are fabricated on the fiber-bundle end-face by a two-photon lithography (TPL) technique. In TPL the output beam of a 100-fs pulsewidth, 80-MHz Ti:sapphire laser oscillator is focused through a dry semi-apochromatic microscope objective (NA = 0.70) inside a suitable resin that is deposited on fiber bundle end-face. The resin polymerizes through Two Photon Absorption (TPA) only in the focal volume. Combined with a computer-controlled piezoelectric positioning system, this approach provides the capability of writing, point-by-point, arbitrary 3D patterns within the resin volume. The resin that is not polymerized can be easily removed through a proper solvent.
Keywords :
biochemistry; biological techniques; lithography; optical fibres; polymerisation; radiation pressure; resins; sapphire; titanium; arbitrary 3D patterns; beam deflectors; computer-controlled piezoelectric positioning system; dry semiapochromatic microscope objective; fiber bundle end-face; fiber-bundle end-face; laser oscillator; optical fiber tweezers; resin polymerisation; resin volume; two photon absorption; two photon lithography technique; Lithography; Optical attenuators; Optical fibers;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4577-0533-5
Electronic_ISBN :
Pending
DOI :
10.1109/CLEOE.2011.5943242
